Debt Financing Arrangements - Long-Term Debt (Details)	Dec. 31, 2025 USD ($)	Dec. 31, 2025 EUR (€)	Dec. 31, 2024 USD ($)
Debt Instruments [Line Items]
Total long-term debt including current maturities	$ 7,612,000,000		$ 8,254,000,000
Current maturities	(1,006,000,000)		(674,000,000)
Total long-term debt	$ 6,606,000,000		7,580,000,000
1.000% Notes
Debt Instruments [Line Items]
Interest Rate	1.00%	1.00%
Face Amount | €		€ 650,000,000
Total long-term debt including current maturities	$ 0		672,000,000
2.500% Notes
Debt Instruments [Line Items]
Interest Rate	2.50%	2.50%
Face Amount	$ 1,000,000,000
Total long-term debt including current maturities	$ 999,000,000		999,000,000
7.500% Debentures
Debt Instruments [Line Items]
Interest Rate	7.50%	7.50%
Face Amount	$ 147,000,000
Total long-term debt including current maturities	$ 147,000,000		147,000,000
6.750% Debentures
Debt Instruments [Line Items]
Interest Rate	6.75%	6.75%
Face Amount	$ 103,000,000
Total long-term debt including current maturities	$ 103,000,000		103,000,000
6.625% Debentures
Debt Instruments [Line Items]
Interest Rate	6.625%	6.625%
Face Amount	$ 144,000,000
Total long-term debt including current maturities	$ 144,000,000		144,000,000
3.250% Notes
Debt Instruments [Line Items]
Interest Rate	3.25%	3.25%
Face Amount	$ 1,000,000,000
Total long-term debt including current maturities	$ 999,000,000		993,000,000
7.000% Debentures
Debt Instruments [Line Items]
Interest Rate	7.00%	7.00%
Face Amount	$ 160,000,000
Total long-term debt including current maturities	$ 165,000,000		161,000,000
2.900% Notes
Debt Instruments [Line Items]
Interest Rate	2.90%	2.90%
Face Amount	$ 750,000,000
Total long-term debt including current maturities	$ 746,000,000		745,000,000
5.935% Debentures
Debt Instruments [Line Items]
Interest Rate	5.935%	5.935%
Face Amount	$ 336,000,000
Total long-term debt including current maturities	$ 341,000,000		337,000,000
4.500% Notes
Debt Instruments [Line Items]
Interest Rate	450.00%	450.00%
Face Amount	$ 500,000,000
Total long-term debt including current maturities	$ 494,000,000		493,000,000
5.375% Debentures
Debt Instruments [Line Items]
Interest Rate	5.375%	5.375%
Face Amount	$ 432,000,000
Total long-term debt including current maturities	$ 427,000,000		426,000,000
6.450% Debentures
Debt Instruments [Line Items]
Interest Rate	6.45%	6.45%
Face Amount	$ 103,000,000
Total long-term debt including current maturities	$ 102,000,000		103,000,000
5.765% Debentures
Debt Instruments [Line Items]
Interest Rate	5.765%	5.765%
Face Amount	$ 297,000,000
Total long-term debt including current maturities	$ 297,000,000		297,000,000
4.535% Debentures
Debt Instruments [Line Items]
Interest Rate	4.535%	4.535%
Face Amount	$ 383,000,000
Total long-term debt including current maturities	$ 294,000,000		291,000,000
4.016% Debentures
Debt Instruments [Line Items]
Interest Rate	4.016%	4.016%
Face Amount	$ 371,000,000
Total long-term debt including current maturities	$ 269,000,000		266,000,000
3.750% Notes
Debt Instruments [Line Items]
Interest Rate	3.75%	3.75%
Face Amount	$ 408,000,000
Total long-term debt including current maturities	$ 403,000,000		403,000,000
4.500% Notes
Debt Instruments [Line Items]
Interest Rate	4.50%	4.50%
Face Amount	$ 600,000,000
Total long-term debt including current maturities	$ 590,000,000		589,000,000
2.700% Notes
Debt Instruments [Line Items]
Interest Rate	2.70%	2.70%
Face Amount	$ 750,000,000
Total long-term debt including current maturities	$ 733,000,000		732,000,000
6.950% Debentures
Debt Instruments [Line Items]
Interest Rate	6.95%	6.95%
Face Amount	$ 157,000,000
Total long-term debt including current maturities	154,000,000		154,000,000
Other
Debt Instruments [Line Items]
Total long-term debt including current maturities	$ 205,000,000		$ 199,000,000